Sprayer



Patented Non'. d,

CHARLES ERCKSON, F EPL EEXNNEST.

SFRA

. Application tiled may al, 1921. Ser-tal '.o. 473,536.

Toa 'whom t may concern.'

Be it known that l, CHARLES ERICKSON, am a citizen of the United States, residing at Minneapolis. in the county of Hennepin l and State of Minnesota, have invented certain new and. useful Improvements in Sprayers; and I do hereby declare the following to be a. full, clear, and exact description of the invention, such as will il@ enable others skilled in the art to which it appertainsto make and use the same.

My invention provides an extremely simple and highly eicient hydraulic sprayer adapted for use to commingle solutions of i@ various kinds with a stream of water discharged from a hose or pipe.

A device of this kind may be put to manyv different uses. For example, the solution -may be a nitrate solution to be sprayed upon lawns or the like; it may be insecticide or oermicide to be sprayed upon trees or growing. vegetation, or might be even a reextinguishing solution to be mixed with the stream of water discharged upon a tire.

Generally stated, the invention consists of the novel devices and combinations of devices .hereinafter described and defined in the claims.

IThe invention is illustrated in the ae- 3@ companying drawings, wherein like characters indicate like part-s throughout the several views.

Referring to the drawings:

Fig. 1 is a plan View with some parts sectioned showing the apparatus;

Fig. 2 is a side elevation of the device with some parts broken away;

Fig. 3 is a section on the line 3 3 of Fig. 2;

Fig. 4 is a. section on the line #1 4 of Fig. 2; and Fig. 5 is a section on the line 5 5 of Fig. 1.

rllhev numeral 6 indicates a solution tank in the form of a cylinder in which works a, piston 7. rllhe cylinder 6, as shown, has but one removable head 8, and axially secured to the other head thereof, by means of a threaded gland 9 or the like, is a transparenttube 10. This transparent tube 10 is preferably a glass tube, but might be of any form or construction permitting a rod or the like to be seen when within the same. The piston 7 is provided with .a small rod 11 that works freely and with A Water discharge pipe 15 extends from` the rear end of the cylinder 6, bein as shown, connected tov the head 8. Y- coupling 16 is attached, to the discharge end of the water pipe 15 and, inward of said coupling, said pipe is provided with a valve 17. rlhe outer end of the transparent tube 10 is connected to onebranch of the tf-coupling 16 by a small pipe 16 eqmpped with a valve 19. rllhe outer end ofthe coupling 16 has a nipple 20 to which is attached a. hose 21 equipped at its-tree end with a spraying nozzle 22;

vScrew-threaded into an openin in the cylinderhead 8 is a plug 23, whic in the preferred arrangement, is connected to the plston head 7 by a chain or cable 21h At or near. its discharge end, the cylinder is provided with a 611er tube 25 normally closed by a plug 26. The numeral 27 indicates a normally closed vent cock applied at or near the same end of the cylinder. The operation of this spraying apparatus will be substantially as follows:

`While the piston 7 is at the rear end of the cylinder, the plug 26 is removed and the solution is poured into the cylinder through the filler neck 25, the vent cock 27 being then preferably open to permit the displacement of -air from the cylinder. en the cylinder is thus filled. the' plug 26 is applied and the vent cock 27 is closed. @t course, while the above filling action is taking lace, r the supply valve 14 must be close and, preferably, the valves 17 and 19 will also then be closed.

When the spraying action is to be started, the valves 14 and -17 must be opened to produce a iiow of water under pressure into and from the rear end of the cylinder and out through the pipe 15, hose 21 Iand nozzle 22. 1f the valve 19 be closed, then the spray will be entirely water. The pressure of the water in the cylinder, acting on the piston, will tend totorce the same forward and the piston. will thus move whenever the valve 19 imacat,

operating the same can sprayl a very reat areain com ari'son to the time consume atIcaimim. f A"spraying device comprising a cylin- ..der, a piston working therein, a water sup- The extent to which the va ve 19 is opened' will determine the proportionate amountiof the soluti'on that will be delivered into the water and discharged-in the spray. l

The valve 14 should be always wide lopen and the flow of the water regulated by adjustments of the valve `17, that is, of course,

except when it is desired to cut-ofi the supi pl of water from the cylinder.

he movement of the valve stem 11, in the transparent tube 10, can be observed and thereby the rate at which the solution is being discharged may be quite accurately determined. Another object of extending the 'valve Stem or indicatinoI rod 11 into a transparent or sight tube is i'at -a packed joint is not made necessary, since the tube 10 is loose' around the stem or rod so that it can serve also as a discharge tube for the solution.

n .en the piston 7 has nearly or quite reached the discharge end ofthe cylinder,

the solution will have been all or nearly all discharged from the cylinder. To return the piston to the rear end of the c linder so that it can be refilled, it will be rst necessary to close the valve 14 and then to remove the plug 23 so as to adord a vent; and when this is done, by pulling rearward on the removed plu and cable 24, the piston can be drawn bac to the starting point, that is, to its retracted position.

f rllhe eiliciency of this device has been thoroughl demonstrated in practice. It is especial y adapted for use where large quantities of solution must be sprayed and where the saving of labor is an important factor. rlhe operation of this apparatus by one man is an extremely easy job and the one man plypip'e connected to deliver allof the flow' 'ig water into one end of said cylinder, a

Water discharge pipe extended from the same end of the c linder, and a solution delivery tube exten ed from the other end of Y said cylinderl and connected to. said water d1schargep1pe, sa1d piston having a rod working 1n said tube. n

' 2. A spraying device comprising a cylinder, aopiston Working therein, a Water supply pipeconnected to deliver all of the flowing water into one end of said cylinder, a Water discharge pipe extended from the same endof the cylinder, a solution delivery tube extended from the other end of the cylinder `and connected to said water discharge pipe, a plug in the water-receiving end of said cylinder, and a flexible lconnection between said plug and piston, whereby the latter may be retracted when said plug is removed.

3. A `spraying device comprising a cylinder, -a piston working therein, a water supply pipe connected to deliver all of the How- 1ng water into one end of said cylinder, a water discharge pipe extended from the same end of the cylinder, and a solution delivery tube extended from the other end of the cylinder and connected to said wa/ter discharge pipe, said piston having a rod workin` in said solution deliver tube, and said tu e being transparent 'at least inpart so that the position of said rod therein may be observed.

4. The structure defined in claim 1 in further combination with a connection for retracting the piston.

In testimony whereof Iaiiix m si ature.

C LES ER CKgSnUN. 

